Fluid Attacks Database

Description

A flaw in Node.js Permission Model filesystem enforcement leaves fs.realpathSync.native() without the required read permission checks, while all comparable filesystem functions correctly enforce them.

As a result, code running under --permission with restricted --allow-fs-read can still use fs.realpathSync.native() to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories.

This vulnerability affects 20.x, 22.x, 24.x, and 25.x processes using the Permission Model where --allow-fs-read is intentionally restricted.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
alpine v3.21	nodejs	>=0 <22.22.2-r0	22.22.2-r0
debian 13	nodejs	=20.19.2+dfsg-1 \|\| =20.19.2+dfsg-1+deb13u1 \|\| >=0 <20.19.2+dfsg-1+deb13u2	20.19.2+dfsg-1+deb13u2
debian 14	nodejs	=20.19.2+dfsg-1 \|\| =20.19.4+dfsg-1 \|\| =20.19.5+dfsg+~cs20.19.12-1 \|\| =20.19.5+dfsg+~cs20.19.12-2 \|\| =20.19.5+dfsg+~cs20.19.12-3 \|\| =20.19.5+dfsg+~cs20.19.12-4 \|\| =20.19.5+dfsg+~cs20.19.24-1 \|\| =22.12.0+dfsg-1 \|\| =22.12.0+dfsg-2 \|\| =22.12.0+dfsg-3 \|\| =22.14.0+dfsg-1 \|\| =22.18.0+dfsg+~cs22.17.2-1 \|\| =22.18.0+dfsg+~cs22.17.2-2 \|\| =22.18.0+dfsg-1 \|\| =22.19.0+dfsg+~cs22.18.0-1 \|\| =22.21.1+dfsg+~cs22.19.0-1 \|\| =22.21.1+dfsg+~cs22.19.0-2 \|\| =22.21.1+dfsg+~cs22.19.0-3 \|\| =22.21.1+dfsg+~cs22.19.0-4 \|\| =22.21.1+dfsg+~cs22.19.0-5 \|\| =22.21.1+dfsg+~cs22.19.0-6 \|\| =22.22.0+dfsg+~cs22.19.13-1 \|\| =22.22.0+dfsg+~cs22.19.13-2 \|\| =22.22.0+dfsg+~cs22.19.6-1 \|\| =22.22.1+dfsg+~cs22.19.15-1 \|\| >=0 <22.22.2+dfsg+~cs22.19.15-1	22.22.2+dfsg+~cs22.19.15-1
alpine v3.22	nodejs	>=0 <22.22.2-r0	22.22.2-r0
alpine v3.23	nodejs	>=0 <24.14.1-r0	24.14.1-r0
rpm rhel8	nodejs	-	-
rpm rhel9	nodejs	-	-
rpm rhel10	nodejs22	-	-
rpm rhel10	nodejs24	<1:24.14.1-2.el10_1	1:24.14.1-2.el10_1
alpine v3.24	nodejs	>=0 <24.14.1-r0	24.14.1-r0

1-10 of 11

Aliases

1. CVE-2026-217152. NVD-2026-217153. OSV-ALPINE-2026-217154. OSV-2026-217155. OSV-DEBIAN-2026-217156. GCVE-2026-217157. SECURITY-CVE-2026-217158. SECURITY-TRACKER-CVE-2026-217159. https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21715.json

References

1. https://nodejs.org/en/blog/vulnerability/march-2026-security-releases

Does your application use this vulnerable software?

During the free trial, our tools assess your application, identify vulnerabilities, and provide recommendations for their remediation.